I am new to R and have been doing my utmost to learn it in order to teach my
students how to use it as an alternative to programs you have to purchase
and I am very grateful for the program and what it can do.but I am having a
slight problem as I also am not very much into programming though willing
to learn.
I have been trying to apply a mixed model ANOVA to some data I have. In
short one repeated measure (behavior being observed with 8 levels), one
independent measure (Age with 2 levels - classified as <21 or >=21) and then
the dependent variable is the score that the subjects obtained for the
specific behavior (Frequency).
I have been trying to use the aov model set up in the following way based on
what I have searched online:
aov(Frequency~Behavior*Age+Error(Subject/Behavior)+Age, dataframe). My data
is organized such that I have the data in the long format Subject, Age,
Behavior, Frequency.
All this gives me the following error:
Warning message:
In aov(Frequency~Behavior*Age+Error(Subject/Behavior)+Age, :
Error() model is singular
If you would kindly excuse my ignorance, would someone please guide me as to
what I am doing wrong.
Thank you in advance.
Stephen
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